Hale 5.0 FoamLogix - Manual (Page 87)

ΙΙΙ
-7
ROTARY GEAR PUMP
ELECTRONIC FOAM PROPORTIONING SYSTEM
Section
III
: Set-up and Calibration
WATER FLOWSENSOR CALIBRATION
NOTE: The flowsensor is calibrated at
Hale Products Inc. and matched to the
control unit. If the system is installed
properly only minor adjustments should
be necessary to flowsensor reading.
Flowsensor calibration should be verified
during NFPA/UL testing of apparatus and
delivery to end user.
NOTE: An accurate flow measuring
device must be used to measure the
water flow when calibrating the
flowsensor. Use a suitable size smooth
bore nozzle and an accurate Pitot
Gauge instrument. Hand held pitot
gauges are usually not very accurate.
Make sure the system is calibrated with
an accurate flow measuring device.
Determine the water flow normally
expected from the discharge outlet and
establish flow. Make sure the water flow
established is within the range of the
flowsensor monitoring the discharge. For
example, actually establish a flow of 150
GPM (568 LPM) of water through a nozzle
and Pitot system. Compare the calculated
flow value to the value shown on the
control unit digital display.
Press the
é or ê button to set the reading
to match the actual flow calculated from
the Pitot gauge reading. Decrease fire
pump pressure by approximately ½ and
recalculate water flow rate. Verify the
reading on the control unit is within 5% of
the actual value. Stop the water flow when
the reading adjustments are completed.
Figure 3-4. Flowsensor Calibration Display
Figure 3-3. Entering Calibration Mode
RELEASE WHEN
DISPLAY SHOWS
"CALIB"
PRESS AND
HOLD
CONTINUE TO
HOLD
DISPLAYS WHEN
ê IS PRESSED
DISPLAYS WHEN
é IS PRESSED
PRESS IN
SEQUENCE AS
NECESSARY TO
ENTER
PASSWORD